The deposit number is written in the form of "room number-deposit number". The writing of the sign-in number is usually different according to different scenarios or needs. Some commonly used occupancy numbers are written in the form of "room number-occupancy number", such as "301-0/"and "30 1-02". Bank check-in items are generally assigned by bank staff when checking in. For example, "00 1" and "A00 1", the number of items stored in public places (such as museums and libraries) is usually designated by the staff, which can be numbers, letters or combinations, such as "00 1" and "A00 1".